They have many types of Buddhism in the world. Theravāda Buddhism, Zen Buddhism, and Tibeto-Mongolian Buddhism.

            Zen Buddhism is a form of Buddhism that became popular in China, Korea and Japan and that lays special emphasis on meditation. Zen places less emphasis on scriptures than some other forms of Buddhism and prefers to focus on direct spiritual breakthroughs to truth.Zen Buddhist teaching is often full of paradox, in order to loosen the grip of the ego and to facilitate the penetration into the realm of the True Self or Formless Self, which is equated with the Buddha himself.

Though based upon Mahayana, Tibeto-Mongolian Buddhism is one of the schools that practice Vajrayanaor "Diamond Vehicle" It accepts all the basic concepts of Mahāyāna, but also includes a vast array of spiritual and physical techniques designed to enhance Buddhist practice. Tantric Buddhism is largely concerned with ritual and meditative practices.

Theravāda Buddhism,the cause of human existence and suffering is identified as craving, which carries with it the various defilements. These various defilements are traditionally summed up as greed, hatred and delusion. These are believed deeply rooted afflictions of the mind that create suffering and stress.To be free from suffering and stress, these defilements must be permanently uprooted through internal investigation, analyzing, experiencing, and understanding of the true nature of those defilements by using jhāna, a technique of the Noble Eightfold Path.